The Duracell 389/390 Silver Oxide Button battery is designed to provide reliable power to specialty devices like watches medical devices digital thermometers and other electronics. Duracell 389/390 Silver Oxide Button batteries are guaranteed for 3 years in storage so you can be confident these batteries will be ready when you need them. From storm season to the holidays Duracell is the #1 trusted battery brand. • POWER FOR A WIDE RANGE OF DEVICES: The Duracell 389/390 Silver Oxide Button battery is designed for use in a variety of compatible devices like watches medical devices calculators and other electronics. • LONG-LASTING POWER: Duracell high power 389/390 batteries were also developed to provide reliable performance for digital thermometers laser pointers stopwatches and more. • GUARANTEED FOR 3 YEARS IN STORAGE: Duracell 389/390 Silver Oxide Button batteries are guaranteed for 3 years in storage so you can be confident these batteries will be ready when you need them. • BUILT FOR RELIABLE PERFORMANCE: In a wide range of high-powered devices the 389/390 is equivalent to SR54 SR1130W SR1130SW 389 390 D389 D390 V389 V390 and SR11 battery types. • #1 TRUSTED BATTERY BRAND: From storm season to the holidays Duracell is the #1 trusted battery brand. • Sold as 1 Each.